This story seems to hint that both tubs have been repaired:
https://www.facebook.com/sportaudi
Also, there was an Autosport article a couple of days ago that hinted that Audi would get at least one tub back in time to use it as a spare for Spa.
Whether they got one or both tubs back, they'll only be used as spares at Spa, because of them having built up new cars as a precaution against not getting repairs done in time.